'98 Clutch fan failure.....

[DMX84]

This fan clutch failed after only 2.5 years? I had replaced this during my timing belt replacement, and used genuine Toyota parts! I hope no damage is done to my water pump, but will find out shortly.
Pictures to follow.
DMX

 

[spressomon]

Dean, I had a similar experience with my blue OEM clutch; brand new and it s*** the bed at 2-years. Not sure what is wrong with your's but for mine it wasn't hooking up. I drained the factory silicone out of it, took about 12+ hours IIRC, and replaced with a blend of 7500 and 10000 CST (for additional cooling/air pull at slower trail crawling speeds) silicone fluid and its been great ever since. Saved me from purchasing a brand new $$ fan clutch.

 

[dogdaysindurham]

You might want to talk to Josh at AJIK Overland Exchange, I was reading about the Blue Clutch Fan mod http://ajikoverlandexchange.com/ It sounds really similar to what Spressomon had done with unit. I think a bunch of 80 series folks have had good success with similar set up. Cruiseroutfit is using one for his Baja chase vehicle https://forum.ih8mud.com/100-series...dy-build-thread-2000-uzj100-land-cruiser.html

 

[DMX84]

I've had 0 issues with vehicle overheating etc. the first time I noticed it was locked up always on = fan noise and reduced MPG.

I started hearing the same noise (loud roar when revving/driving fast) this time and figured I'd look at when I got home. Then the fan noise became more of a rattling sound that I could almost feel. I popped the hood and seen the thing wobbling! When I shut it off, it was loose on its shaft. I can see oil residue all over everything too.
This morning it's not as loose,
now I have it off it's seems tight, but feels rough.

I think I may have found the problem (sorry to say). see picture.

 

[DMX84]

Now I'm wondering if I used an aftermarket clutch, because I remember getting a heavy duty unit, and Dan only offered this as a replacement?
Is this a good one? I see blue as you guys mentioned.
~Dean

 

[DMX84]

Now that I've got everything off I see that the OEM has STUDS and the other has bolts holding the fan on?
Can someone confirm this is the correct fan clutch. Toyota PN# 16210-50051 for a '98 LC.
Thanks

 

[DMX84]

Dean, I had a similar experience with my blue OEM clutch; brand new and it s*** the bed at 2-years. Not sure what is wrong with your's but for mine it wasn't hooking up. I drained the factory silicone out of it, took about 12+ hours IIRC, and replaced with a blend of 7500 and 10000 CST (for additional cooling/air pull at slower trail crawling speeds) silicone fluid and its been great ever since. Saved me from purchasing a brand new $$ fan clutch.

Thanks Dan,
My clutch is FUBAR'd. I looked into the clutch fan mod and not sure I want to tear into a new uint to make it better. My main reason time, but from what I've read the fluid mod isn't 100% either. Without a way to monitor the temps with any kind of certainty, I think it's just blind luck.

I think I'll use this opportunity to buy a better scan tool - following your ScangaugeII idea. This way I can keep an eye everything including the temperature. Hopefully allowing me to catch this before a complete failure.
Then, I can change fluid, and compare notes and have quantitative base line with the data previously collected with the scan tool.

Luckily, I keep all the leftover hardware from the previous mods/repairs, and found these serrated flange nuts to hold my fan on. Since there were only 4 I'm wondering if they aren't the originals? LOL